Geologic Time Puzzle

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Across
  1. 3. The last milestone in Precambrian Time
  2. 4. Our current geologic era
  3. 5. The next milestone right after the creation of the first mammals
  4. 8. When the sun and moon formed
  5. 9. Formed in the mid-Cenozoic Era
  6. 10. First milestone in the Cenozoic Era
  7. 11. The first sharks
  8. 12. Formed in the late Paleozoic Era
Down
  1. 1. Formed in the early Mesozoic era
  2. 2. The starting age of the dinosaurs
  3. 6. Evolved in the late Cenozoic era
  4. 7. Formed in the mid-Paleozoic Era